Excuse me, this how to do it, no clue, not available in the Internet!-CodePudding

CodePudding user response:

After the study, beginners can be achieved, small white, and you said, you also don't understand.

CodePudding user response:

reference 1/f, constantly surprise response:

, after studying the beginners can be achieved, the small white, and you said, you also don't understand.

And can say that you want to get out of this, you need to learn what knowledge?

CodePudding user response:

Android: drop-down box control + button
Click on the button to get the drop-down box value, refresh the list below, listview, the gridview, the view can realize

All programming languages, basic it is this implementation,